Scab scar after yellow chemical peel is permanent?

Thanks for your question.  Hopefully by now everything is back to normal, and you don't have any scarring.  Sometimes too aggressive peeling of the skin or a scab can result in a scar, but if you use good sun protection and gentle skin treatments, it is less likely that you have created permanent damage.  It sounds like you might have had post-inflammatory hyperpigmentation, which is common in any injury to the skin if it has rich pigmentation naturally.  If the area still appears concerning to you, see a dermatologist for evaluation.  Best of luck!

Thank you for your question, 
It is best that you have this assessed by your specialist to make sure everything's healing as expected. The brown pigmentation you're describing sounds like post inflammatory hyperpigmentation which can occur after any procedure. Pigmentation changes can occur and will fade over time, but this process can take 3-4 months for some people depending on the type of procedure done. Make sure to protect the skin from direct sunlight to prevent further pigmentation changes, I recommend to use a physical block daily. Also, multiple laser toning treatments can help to even out the skin tone and lighten the hyperpigmentation. You will notice an improvement after a few treatments, but discuss with your specialist if you would be a candidate for laser toning and review any risks or side effects for this.
I hope this helps.
Regards,
Sheetal Sapra, MD, FRCPC